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Diagnosing Osmosis

Planning the  Work

Preparation

Inspecting & Drying

Materials Required

Epoxy Application

We recommend Advanced Osmosis Technologies to provide you with an expert osmosis diagnosis and repair service

                           Epoxy ApplicationPorous fibreglass laminate must be saturated with epoxy resin by applying several coats of Safeguard LVP

PRIMING AND REPLACEMENT OF DAMAGED FIBREGLASS LAMINATE Prior to any repair work any resin starved areas should first be thoroughly saturated with SAFEGUARD LVP. The hull should then be primed with one coat of SAFEGUARD LVP to provide a sound base for application of EASY FAIR epoxy filler.

Any additional repair work, such as adding extra layers of laminate to replace damaged laminate that has been removed in severe osmosis cases, should be completed before application of the filler. Areas with minor surface pitting and isolated deep pits, especially around the turn at the top of the keel and skeg, indicate where minor voids may have occurred in the lay-up. These should be ground back to sound laminate prior to priming the hull. Easy Fair is an epoxy filler that is suitable for use above or below water

FAIRING THE HULL  Fairing the hull is required following repairs and prior to the application SAFEGUARD. This allows the SAFEGUARD to be applied evenly and avoids the danger of reducing the thickness of the coating present if fairing is done after application. Any low areas, nicks or gouges should be filled with EASY FAIR TROWELLABLE filler. This is sanded smooth after curing and the process repeated as necessary until a smooth bottom is achieved. Any sharp edges should be slightly rounded at this time. This prevents thin areas of SAFEGUARD on the edges.

APPLYING SAFEGUARD  Choice of system. Use SAFEGUARD TSF totally solvent free coating if you want to apply each coat in quick succession without waiting for each coat to dry. Use SAFEGUARD EA easy application, low solvent coating if you wish to apply one coat a day in winter or two coats a day in hot summer conditions. SAFEGUARD products are intended to be applied by roller or brush.  Spraying is possible but it is recommended that a professional undertake the task.

Five coats of SAFEGUARD TSF or EA should be applied to achieve a total cured thickness of approximately 600 microns. To ensure that the correct thickness is achieved, use the full amount of SAFEGUARD that has been calculated for your craft, even if more coats are required.

Apply the first coat. Successive coats of SAFEGUARD TSF mayThis yacht has been prepared for coating with 5 coats of Safeguard TSF waterproof epoxy coating be applied as soon as the previous coat has set sufficiently to prevent sagging. Successive coats of SAFEGUARD EA must not be applied until the solvent within the coating has evaporated. Both products must be over-coated before they have cured so that chemical bonding occurs between the coats. Details of minimum and maximum over-coating times are contained in the relevant product literature. Alternate coats should be of different shades to ensure even coats are applied.

For best results when using a roller, it is suggested that the last coat be lightly brushed smooth after rolling.  The remaining brush and roller marks can be removed by applying one coat of EASY FAIR SEU sandable epoxy undercoat. It is easy to sand to a perfectly smooth finish ready for the antifouling.

Immediately after the treatment has been finished is the perfect time to apply SYNERGY long life metallic copper antifouling. SYNERGY gives excellent protection against fouling and will eliminate the annual chore of antifouling for at least 10 years.

APPLICATION INSTRUCTIONS More detailed application instructions are available in each products data sheet which you can download from the product pages of this web site.

Please remember that to obtain the best long term results the resins and fillers must be proportioned accurately and mixed thoroughly. This is so important that we have written separate mixing instructions.